In a new interview with The Hollywood Reporter at the NAPTE convention in Miami, Sheen suggested that Two and Half Men's quality has dropped significantly since he left the series.

"I don't think [Two and a Half Men] should go on past this year. I just think that people are there because there's nowhere else to go," the star commented.

Sheen also said he empathises with Kutcher because he famously replaced Michael J Fox on Spin City in 2000.

"I've done what he's done. I've replaced a guy. It's so f**king hard, you can't believe it. It's all you're thinking about and you're surrounded by these ghosts," he explained.

Sheen continued: "They physically changed the set [on Men] so that there's not this subconscious thing of it's Charlie's piano or it's Charlie's stuff.

"So hats off to [Ashton] for doing the best job that he can. I don't think that he's working with the best writing because [Lorre is] doing too many shows. He and Jon [Cryer] and Angus [T Jones] deserve better material."